From 2 March 2015 it will be illegal in England and Wales to drive with certain illegal drugs in the blood, even if you’re not unfit to drive.It will also be illegal to drive with certain levels of certain legal drugs if you’re unfit to drive.Talk to your doctor about whether you should drive if you’ve been prescribed any of the following drugs:• clonazepam• diazepam• flunitrazepam• lorazepam• methadone• morphine or opiate and opioid-based drugs• oxazepam• temazepamYou can drive after taking these drugs if:• you have been prescribed them and advised how to take them by a healthcare professional• they aren’t causing you to be unfit to driveYou could be prosecuted if you drive with certain levels of these drugs in your body and you haven’t been prescribed them.The law doesn’t cover Northern Ireland and Scotland but you could still be arrested if you’re unfit to drive.If you’re convicted of drug driving you’ll get:• a minimum 1 year driving ban• a fine of up to £5,000• up to a year in prison• a criminal recordYour driving licence will also show you’ve been convicted for drug driving. This will last for 11 years.The penalty for causing death by dangerous driving under the influence of drugs is a prison sentence of up to 14 years.